High-energy-efficiency air guide pipe of natural ventilation cooling tower of power station

Abstract

The utility model relates to the field of cooling tower air ducts, in particular to a high-energy-efficiency power station natural ventilation cooling tower air duct which comprises an air duct body, an anti-vibration mechanism is arranged outside the air duct body, the anti-vibration mechanism comprises an upper-layer lantern ring fixedly arranged on the top of the air duct body in a sleeved mode, and the bottom end of the upper-layer lantern ring is fixedly connected with a connecting arm. The bottom end of the connecting arm is fixedly connected with a weighting base, and the inner side of the weighting base is fixedly connected with the outer side wall of the air guide pipe body. The air guide pipe body is matched with the shockproof mechanism and other parts, the upper-layer lantern ring, the connecting arm and the weighting base are connected, the vibration amplitude of the air guide pipe body is limited in a clasping and fixing mode, and vibration borne by the air guide pipe body is dispersed to a building through the weighting base. And meanwhile, through cooperation of the middle-layer lantern ring, the buffer cantilevers and the baffle box, force borne by the air guide pipe body during vibration is offset, and then the service life of the structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of cooling tower air ducts, in particular to an air duct of a natural ventilation cooling tower of a high-energy-efficiency power station. Background Art

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and discharge it into the atmosphere to lower the water temperature. It uses the flow of water and air to exchange heat and generate steam. The steam evaporates and takes away the heat to achieve the principles of evaporative heat dissipation, convection heat transfer and radiation heat transfer to dissipate the waste heat generated in industry or refrigeration and air conditioning to lower the water temperature. This is an evaporative heat dissipation device to ensure the normal operation of the system. The device is generally barrel-shaped, hence the name cooling tower. An air guide is usually provided on the top of the cooling tower to guide the air. The existing air guide tower is prone to explosion during the air guiding process because its internal air pressure is in a full state for a long time. This has certain safety hazards and shortens its service life.

[0003] After searching, the patent document with publication number CN217953260U provides an air duct for a natural ventilation cooling tower of a high-efficiency power station: the utility model discloses a pressure-resistant cooling tower air duct, including an air duct body, a pressure relief port is provided in the middle of one side of the air duct body, an explosion-proof cylinder located outside the pressure relief port is fixedly connected to the air duct body, and pressure relief cylinder one and pressure relief cylinder two are fixedly connected on both sides of the top of the explosion-proof cylinder, through holes are provided at the top of the pressure relief cylinder one and the top of the pressure relief cylinder two, and sound insulation grilles are fixedly provided inside the two through holes. The utility model is a pressure-resistant cooling tower air duct, a pressure relief port and an explosion-proof cylinder located outside the pressure relief port are provided on the air duct body, and a movable baffle is elastically provided in the explosion-proof cylinder by a strong spring. When the internal air pressure is too large, the movable baffle is driven to squeeze the strong spring to open the pressure relief port, so that the air pressure is timely released through the through holes of the pressure relief cylinder one and the pressure relief cylinder two, thereby avoiding certain safety hazards caused by explosion and extending the overall service life.

[0004] The above technical documents show that in the working process of the high-efficiency power station, the air guide tube is usually directly welded to the support rod. The air guide tube is suspended for a long time on the support rod. The vibration of the fan will be transmitted to the connection along the support rod. Under long-term conditions, it will cause damage to the welding part of the connection, causing cracks and affecting the overall life of the fan.

[0005] Therefore, it is necessary to invent a high-efficiency power station natural ventilation cooling tower air duct to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an air duct for a natural ventilation cooling tower of a power station with high energy efficiency. The vibration amplitude of the air duct body during use is reduced by cooperating with the air duct body and the shockproof mechanism, so as to solve the problem in the prior art that the air duct is suspended for a long time on the support rod, and the vibration of the fan is transmitted to the connection along the support rod, which may cause damage to the welding part of the connection under long-term conditions, causing cracks and affecting the overall life of the fan.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air duct of a natural ventilation cooling tower of a high-efficiency power station, comprising an air duct body, a shockproof mechanism is arranged on the outside of the air duct body, the shockproof mechanism comprises an upper collar fixedly mounted on the top of the air duct body, the bottom end of the upper collar is fixedly connected to a connecting arm, the bottom end of the connecting arm is fixedly connected to a weighted base, and the inner side of the weighted base is fixedly connected to the outer side wall of the air duct body.

[0008] Preferably, a middle collar is fixedly provided on the outer wall of the middle part of the air duct body, a buffer cantilever is fixedly connected to one side of the middle collar, and a force dissipation box is fixedly connected to one end of the buffer cantilever away from the middle collar.

[0009] Preferably, a force dissipation cavity is provided on the inner side wall of the force dissipation box, the force dissipation cavity is sleeved on the outside of the connecting arm, and a buffer pad is fixedly connected to the inner side wall of the force dissipation cavity.

[0010] Preferably, the inner side wall of the buffer pad is in conflict with the outer side wall of the connecting arm, and the material of the buffer pad is silicone rubber.

[0011] Preferably, a connection box is fixedly connected to the outer side of the air duct body, and a pressure relief port is provided on the side where the air duct body is connected to the connection box, and the diameter of the pressure relief port close to the connection box is smaller than the diameter of the pressure relief port away from the connection box.

[0012] Preferably, the top of the connecting box is fixedly connected to a first pressure relief cylinder, the top of the connecting box is fixedly connected to a second pressure relief cylinder, the inner wall of the connecting box is fixedly connected to a return spring, one end of the return spring is fixedly connected to a force plate, and the force plate is slidably connected to the bottom wall of the connecting box.

[0013] Preferably, a stop plate is fixedly connected to the bottom wall at the top of the air duct body, a top stop plate is arranged above the stop plate, and the top stop plate is fixedly connected to the top wall at the top of the air duct body.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. Through the coordination of the air duct body and the anti-vibration mechanism and other parts, and through the connection of the upper collar, the connecting arm and the weighted base, the vibration amplitude of the air duct body is limited by holding and fixing, and the vibration borne by the air duct body is dispersed to the building through the weighted base. At the same time, the coordination of the middle collar, the buffer cantilever and the force dissipation box makes the forces borne by the air duct body during vibration offset each other, thereby improving the service life of the structure;

[0016] 2. Through the cooperation of the stop plate and the top stop plate, the top stop plate is used to block the wind and rain pouring in from the upper half of the air duct body, and the stop plate is used to block the wind and rain pouring in from the lower half of the air duct body and the wind and rain blocked by the top stop plate, thereby slowing down the process of external water vapor entering the interior of the air duct body, thereby improving the service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall first-view structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the connection box of the utility model;

[0021] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0022] Description of reference numerals:

[0023] 1. Air duct body; 2. Shockproof mechanism; 201. Upper collar; 202. Connecting arm; 203. Weighted base; 3. Middle collar; 4. Buffer cantilever; 5. Force dissipation box; 501. Force dissipation chamber; 502. Buffer pad; 6. Connecting box; 7. First pressure relief cylinder; 8. Second pressure relief cylinder; 9. Stop plate; 901. Top stop plate; 10. Reset spring; 11. Force plate; 12. Pressure relief port. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model provides Figure 1-4 The high-efficiency power station natural ventilation cooling tower air duct shown in the figure includes an air duct body 1, and an anti-vibration mechanism 2 is arranged on the outside of the air duct body 1. The anti-vibration mechanism 2 includes an upper layer ring 201 fixedly sleeved on the top of the air duct body 1, so as to hold the top of the air duct body 1 tightly to limit its vibration amplitude. The bottom end of the upper layer ring 201 is fixedly connected to a connecting arm 202, and the bottom end of the connecting arm 202 is fixedly connected to a weighted base 203. The upper layer ring 201 is connected to the weighted base 203 through the connecting arm 202. The weighted base 203 is connected to ensure the conduction of force; the inner side of the weighted base 203 is fixedly connected to the outer wall of the air duct body 1, and the force exerted on the air duct body 1 is transmitted to the building or other equipment connected to the weighted base 203 through the weighted base 203; a middle layer ring 3 is fixedly provided on the outer wall of the middle part of the air duct body 1, a buffer cantilever 4 is fixedly connected to one side of the middle layer ring 3, and a force dissipation box 5 is fixedly connected to the end of the buffer cantilever 4 away from the middle layer ring 3, and the air duct is connected to the air duct body 1 through the middle layer ring 3. The main body 1 is tightly held for secondary restriction, and the inner wall of the force dissipation box 5 is provided with a force dissipation chamber 501, which is sleeved on the outside of the connecting arm 202. The inner wall of the force dissipation chamber 501 is fixedly connected with a buffer pad 502, and the inner wall of the buffer pad 502 conflicts with the outer wall of the connecting arm 202. The material of the buffer pad 502 is silicone rubber. Through the cooperation of the force dissipation chamber 501 and the buffer pad 502, the connecting arm 202 can be elastically supported by the buffer pad 502 when following the vibration of the air duct main body 1. Energy dissipation is achieved by the cooperation between the air duct body 1 and the anti-vibration mechanism 2 and other parts, and by the connection between the upper collar 201, the connecting arm 202 and the weighted base 203. The vibration amplitude of the air duct body 1 is limited by a clamping and fixing method, and the vibration borne by the air duct body 1 is dispersed to the building through the weighted base 203. At the same time, the cooperation between the middle collar 3, the buffer cantilever 4 and the energy dissipation box 5 makes the forces borne by the air duct body 1 during vibration offset each other, thereby increasing the service life of the structure.

[0026] Refer to the instruction manual Figure 1-4The outer side of the air duct body 1 is fixedly connected with a connecting box 6, and a pressure relief port 12 is provided on the side where the air duct body 1 is connected to the connecting box 6. The diameter of the pressure relief port 12 close to the connecting box 6 is smaller than the diameter of the pressure relief port 12 away from the connecting box 6. The pressure is increased by reducing the diameter of the pressure relief port 12. The top of the connecting box 6 is fixedly connected with a first pressure relief cylinder 7, and the top of the connecting box 6 is fixedly connected with a second pressure relief cylinder 8. The inner side wall of the connecting box 6 is fixedly connected with a return spring 10, and one end of the return spring 10 is fixedly connected with a force plate 11. The force plate 11 is slidably connected to the bottom wall of the connecting box 6. The return spring 10 extends to both ends in a natural state. When the wind pressure inside the air duct body 1 is too large, the pressure injected through the pressure relief port 12 causes the force plate 1 1 drives the return spring 10 to slide toward the inside of the connecting box 6, thereby successively giving way to the ventilation passages of the first pressure relief cylinder 7 and the second pressure relief cylinder 8, so that the first pressure relief cylinder 7 and the second pressure relief cylinder 8 assist in sharing the wind pressure. The bottom wall of the top of the air duct body 1 is fixedly connected with a stop plate 9, and a top stop plate 901 is arranged above the stop plate 9. The top stop plate 901 is fixedly connected to the top wall of the top of the air duct body 1. Through the cooperation of the stop plate 9 and the top stop plate 901, the top stop plate 901 is used to block the wind and rain poured in from the upper half of the air duct body 1, and the wind and rain poured in from the lower half of the air duct body 1 and the wind and rain blocked by the top stop plate 901 are blocked by the stop plate 9, thereby slowing down the process of external water vapor entering the inside of the air duct body 1, thereby improving the service life of the structure.

[0027] How this utility works:

[0028] Refer to the instruction manual Figure 1-4 When the high-efficiency power station needs the auxiliary cooling of the air duct body 1 during operation, through the cooperation of the air duct body 1 and the anti-vibration mechanism 2 and other parts, through the connection of the upper ring 201, the connecting arm 202 and the weighted base 203, the top of the air duct body 1 is tightly hugged to limit its vibration amplitude, the upper ring 201 is connected to the weighted base 203 through the connecting arm 202 to ensure the conduction of force, and the force exerted on the air duct body 1 is transmitted to the building or other equipment connected to the weighted base 203 through the weighted base 203, and at the same time, the air duct body 1 and the middle ring 3 are integrated by the cooperation of the middle ring 3, the buffer cantilever 4 and the force dissipation box 5, and the force dissipation cavity 501 and the buffer pad 502 are cooperated, so that the connecting arm 202 can be elastically dissipated by the buffer pad 502 when following the vibration of the air duct body 1, thereby improving the service life of the structure;

[0029] Refer to the instruction manual Figure 1-4By cooperating with the stop plate 9 and the top stop plate 901, the top stop plate 901 is used to block the wind and rain pouring in from the upper half of the air duct body 1, and the stop plate 9 is used to block the wind and rain pouring in from the lower half of the air duct body 1 and the wind and rain blocked by the top stop plate 901, thereby slowing down the process of external water vapor entering the interior of the air duct body 1, delaying the corrosion of the air duct body 1 by external water vapor, and thereby improving the service life of the structure.

[0030] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency power station natural ventilation cooling tower air duct, comprising an air duct body (1), characterized in that: An anti-vibration mechanism (2) is arranged on the outside of the air duct body (1), and the anti-vibration mechanism (2) comprises an upper sleeve (201) fixedly sleeved on the top of the air duct body (1), the bottom end of the upper sleeve (201) is fixedly connected to a connecting arm (202), the bottom end of the connecting arm (202) is fixedly connected to a weighted base (203), and the inner side of the weighted base (203) is fixedly connected to the outer side wall of the air duct body (1).

2. The air duct of a natural ventilation cooling tower of a high energy efficiency power station according to claim 1, characterized in that: A middle-layer collar (3) is fixedly sleeved on the outer wall of the middle part of the air duct body (1); a buffer cantilever (4) is fixedly connected to one side of the middle-layer collar (3); and a force dissipation box (5) is fixedly connected to one end of the buffer cantilever (4) away from the middle-layer collar (3).

3. The air duct of a natural ventilation cooling tower of a high energy efficiency power station according to claim 2, characterized in that: The inner wall of the force dissipation box (5) is provided with a force dissipation chamber (501), the force dissipation chamber (501) is sleeved on the outside of the connecting arm (202), and the inner wall of the force dissipation chamber (501) is fixedly connected with a buffer pad (502).

4. The air duct of a natural ventilation cooling tower of a high energy efficiency power station according to claim 3, characterized in that: The inner wall of the buffer pad (502) is in contact with the outer wall of the connecting arm (202), and the material of the buffer pad (502) is silicone rubber.

5. The air duct of a natural ventilation cooling tower of a high energy efficiency power station according to claim 1, characterized in that: A connection box (6) is fixedly connected to the outside of the air duct body (1); a pressure relief port (12) is provided on the side of the air duct body (1) connected to the connection box (6); the diameter of the pressure relief port (12) on the side close to the connection box (6) is smaller than the diameter of the pressure relief port (12) on the side away from the connection box (6).

6. The air duct of a natural ventilation cooling tower of a high energy efficiency power station according to claim 5, characterized in that: The top end of the connection box (6) is fixedly connected to a first pressure relief cylinder (7), the top end of the connection box (6) is fixedly connected to a second pressure relief cylinder (8), the inner side wall of the connection box (6) is fixedly connected to a return spring (10), one end of the return spring (10) is fixedly connected to a force-bearing plate (11), and the force-bearing plate (11) is slidably connected to the bottom wall of the connection box (6).

7. The air duct of a natural ventilation cooling tower of a high energy efficiency power station according to claim 1, characterized in that: The bottom wall at the top of the air duct body (1) is fixedly connected to a stop plate (9), a top stop plate (901) is arranged above the stop plate (9), and the top stop plate (901) is fixedly connected to the top wall at the top of the air duct body (1).

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